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Also, when you remove the black plastic cap on the service valve, be careful not to break the plastic. It takes forever to remove the broken piece. Done that too! Sent from my STV100-1 using EO Forums mobile app

Correct greasyshirt, and if they are looking for the recharge port, it is on the passenger side of the M2. Next to the engine by the frame rail. Sent from my STV100-1 using EO Forums mobile app

Someone "stole" the fusebox and ECM without unclipping and removing all the wire plugs. They actually just cut all the wire looms! Duh! Got the units back with the wires still attached, but lots of the wires have the same colors and numbers are faded. Should be able the start truck after one...

Thanks, once it all works I will use the new tape that shrinks with heat and some liquid. I heat shrunk the first four, but decided to wait for liftoff before sealing. Sent from my STV100-1 using EO Forums mobile app

Having so much fun. Sent from my STV100-1 using EO Forums mobile app

I am about to hit 1 million miles. These engines like oils with no additives and check the valve lash at least every 200 000 miles.

I know these engines well, but I am puzzled. Let us know when you solve the mystery.

I have dismantled these mbe's and put them back together. Know them pretty well and my current 906 is about to hit 1 million and runs beautiful! Feel free to ask any questions, I might have an answer. A good friend of mine has a shop near Chicago at 294/80 and only worked on these mbe's for...

The air governor is on the driver side of the engine next to the frame rail. Reach it from the bottom. Changing the air compressor is a life changing experience on the mbe900!

My mistake greasytshirt. You are absolved.

Thanks Dave. I think spending the extra money on my engine will be worth it. Thanks for the reference to the oil guy, Dan, great info.

Seeing that greasytshirt revived this thread, let me ask this question. I have 940 000 miles on my MBE 900 (926) and have always nursed this engine and it is in tip-top shape. The last few years I have used Delvac with a gallon of Lucas, but a friend of mine, who has been a mechanic on these...

I had many problems with my M2 fuse box. Finally took it off, drilled it open and it was green as grass on the inside. Used starting fluid and a toothbrush to clean it as best as I could. Screwed it back together with self toppers and was lucky enough to never have problems again.

Truck is now better than new.

Well, my MBE 260 blew the head gasket 20 miles from home. I removed all the parts and will pull the head later today. Loss of coolant only, no oil mix and no overheat so I should be ok. Second day on the job and my body is hurting. Forget about yoga. This job is testing muscles I forgot about.

Which engine?

I am sorry to hear about your bad experience, tknight. Usafk9, thanks for your response. I know there are a few with over a million miles and running. I have nursed my mbe for the last 700,000 miles and do all the mechanical work myself. Engine runs smooth, never idled for long periods and I...

Anyone out there with more than 700,000 miles on their 260hp mbe engine, or 900,000 miles on their 330hp mbe engine? What is your average fuel mileage per gallon. I know their are many factors that influence fuel consumption, but we all have a general idea. Do you use more fuel during winter...

Thanks. Working my way through it all.

I had the low air buzzer last year and replaced the big square valve on the driver side that fixed the problem. Now my brake lights started giving problems on my way home and has completely stopped working. I have checked everything that I can. Does this valve also double as the brake light...